McHenry is a county in North Dakota. It was formed in 1873 (1885) from the following county/ies: Buffalo. McHenry began keeping birth records in 1889–1907, marriage records in 1905, and death records in 1889–1907. It began keeping land records in 1873, probate records in 1873, and court records in 1873. For more information, contact the county at Register of Deeds P.O. Box 57 Towner 58788. On the attached map, McHenry is located at E2.